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sfgsrayvti (4.0)		index
user/roman/Mgsrayvti.c
\n Gauss Seidel iterative solver for phase space escape positions, angle and traveltime \n

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\n Synopsis
       sfgsrayvti < in.rsf > out.rsf vel=slow.rsf velz=slowz.rsf velx=slowx.rsf iq= niter=50 tol=0.000002*nx*nz vti_eps=0.0 vti_gamma=0.0 vti_delta=0.0 vti=
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\n Parameters
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int iq= 		\tswitch for escape variable 0=x, 1=a, 2=t, 3=z, 4=l
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int niter=50 		\tnumber of Gauss-Seidel iterations
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float tol=0.000002*nx*nz 		\taccuracy tolerance
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file vel= 		\tauxiliary input file name
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file velx= 		\tauxiliary input file name
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file velz= 		\tauxiliary input file name
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string vti= 		\twhat to compute (p=qP, v=qSV, h=SH)
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float vti_delta=0.0 		\tVTI constants Thomsen
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float vti_eps=0.0 		\t
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float vti_gamma=0.0 		\t
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